ui/touch_selection/touch_selection_menu_runner.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_TOUCH_SELECTION_TOUCH_SELECTION_MENU_RUNNER_H_
   6 #define UI_TOUCH_SELECTION_TOUCH_SELECTION_MENU_RUNNER_H_
   7
   8 #include "base/macros.h"
   9 #include "ui/touch_selection/ui_touch_selection_export.h"
  10
  11 namespace aura {
  12 class Window;
  13 }
  14
  15 namespace gfx {
  16 class Rect;
  17 class Size;
  18 }
  19
  20 namespace ui {
  21
  22 // Client interface for TouchSelectionMenuRunner.
  23 class UI_TOUCH_SELECTION_EXPORT TouchSelectionMenuClient {
  24  public:
  25   virtual ~TouchSelectionMenuClient() {}
  26
  27   virtual bool IsCommandIdEnabled(int command_id) const = 0;
  28   virtual void ExecuteCommand(int command_id, int event_flags) = 0;
  29
  30   // Called when the quick menu needs to run a context menu. Depending on the
  31   // implementation, this may run the context menu synchronously, or request the
  32   // menu to show up in which case the menu will run asynchronously at a later
  33   // time.
  34   virtual void RunContextMenu() = 0;
  35 };
  36
  37 // An interface for the singleton object responsible for running touch selection
  38 // quick menu.
  39 class UI_TOUCH_SELECTION_EXPORT TouchSelectionMenuRunner {
  40  public:
  41   virtual ~TouchSelectionMenuRunner();
  42
  43   static TouchSelectionMenuRunner* GetInstance();
  44
  45   // Creates and displays the quick menu, if there is any command available.
  46   // |anchor_rect| is in screen coordinates.
  47   virtual void OpenMenu(TouchSelectionMenuClient* client,
  48                         const gfx::Rect& anchor_rect,
  49                         const gfx::Size& handle_image_size,
  50                         aura::Window* context) = 0;
  51
  52   virtual void CloseMenu() = 0;
  53
  54   virtual bool IsRunning() const = 0;
  55
  56  protected:
  57   TouchSelectionMenuRunner();
  58
  59  private:
  60   DISALLOW_COPY_AND_ASSIGN(TouchSelectionMenuRunner);
  61 };
  62
  63 }  // namespace ui
  64
  65 #endif  // UI_TOUCH_SELECTION_TOUCH_SELECTION_MENU_RUNNER_H_